Over the last decade, organic light emitting diodes (OLED) have grown into a reliable, powerful and innovative technology with a multitude of benefits. But there are still a few questions about what exactly makes this lighting so special. Read on to find the answers to some of the most frequently asked questions about OLED lighting.
What is OLED lighting?
Organic light emitting diodes (OLED) are the latest member of the solid-state lighting family. OLED lighting is composed of thin organic layers sandwiched between two electrodes. When DC current is applied, charge carriers from the anode and cathode are injected into the organic layers, electroluminescence occurs and visible light is emitted. Fabricated on sheets of glass, OLEDS do not need heat sinks, diffusers or waveguides and are uniquely thin and lightweight.
Further Reading: What is OLED Lighting?
How is OLED different than LED?
While LEDs are point source lights, OLEDs are large area surface emitters. This area emission creates a diffuse light that is glare-free, has zero blue-light risk, and doesn’t cause the eye fatigue and strain that can be caused by intense point source light. OLEDs use carbon-based materials that emit the wavelength of choice – creating full color natural output. Unlike LED, they do not use phosphor conversion to generate longer wavelengths.
Further Reading: OLED Lighting vs LED Lighting
What is the light output of an OLED panel?
For the square and rectangle Brite 3 products, the nominal output is 300 lumens for 3000K white and 250 lumens for 4000K white. Round panels are nominally 200 lumens (3000K) and 165 lumens (4000K). By decreasing current, lower light levels can be accomplished specific to user preference and application demands. With lower light levels, you would see an increase in lifetime.
Further Reading: Lumiblade Brite 3 Products
How long do OLEDs last? What is their lifetime?
Lifetime is defined as the time at which the panel is reduced to 70% of its initial brightness, L70. This is not a hard failure, the way an incandescent bulb dies, but a metric based on reduced light output at constant current. Brite 3 products at nominal brightness are rated for 30K hours. At 3,000 cd/m2, a brightness level that is consistent with office lighting standards in the EU, lifetime extends to 100K hours.
Further Reading: Lumiblade Brite 3 Products – A Closer Look: OLED Reliability Put to the DOE Test
Can you customize OLEDs to any shape or size?
We’ll give you a hint: yes! To find out how they’re being used today and what’s possible in the way of customization, download our OLED Lighting FAQ Guide.